Batman faces his greatest challenge yet: vacation! The caped crusader reluctantly lets Batgirl and Nightwing take him on a long-overdue vacation from crime fighting while Superman and the Justice League watch over Gotham City. When Batgirl and Nightwing take Batman on a trip down memory lane - literally - to visit a key mentor from Batman's formative years, the Bat trio encounters old nemeses, and invaders from the center of the earth show Superman and the other Leaguers just how busy Batman is on a regular basis.
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